用socket发邮件 有个有关问题

<br>	class aMail{<br>		public static $smtp_prot = 25;<br>		public static $debug = true;<br>		public static $crlf  = "\r\n";<br>		var $smtp_host;<br>		var $login_name;<br>		var $password;<br>		var $form;<br>		var $to;<br>		var $err;<br>		var $message;<br>		var $socket;<br>		function __construct($options=""){<br>			if($options == "" || !is_array($options)){<br>				return false;<br>			}<br>			foreach($options as $key=&gt;$val){<br>				$this-&gt;$key = $val;<br>			}<br>		}<br><br>		function sendMail(){						 <br>			$this-&gt;socket = fsockopen($this-&gt;smtp_host,self::$smtp_prot);<br>			$socket = $this-&gt;socket;<br>			$crlf   = self::$crlf;<br>			stream_set_blocking($socket,true);<br>			$this-&gt;message = fgets($socket,512);	<br>			echo $this-&gt;message;<br>			if(!$this-&gt;print_messsage("/^220/","connect fail")){<br>				return false;<br>			}<br><br>			fputs($socket,"EHLO 127.0.0.1 ".$crlf);<br>			$this-&gt;message = fgets($socket, 512);				<br>			if(!$this-&gt;print_messsage("/^2/","EHLO fail")){<br>				return false;<br>			}<br><br>			fputs($socket,"AUTH LOGIN".$crlf);<br>			$this-&gt;message = fgets($socket, 512);				<br>			$this-&gt;print_messsage("/^2/","AUTH LOGIN fail");<br><br>			fputs($socket,base64_encode($this-&gt;login_name).$crlf);<br>			$this-&gt;message = fgets($socket, 512);				<br>			$this-&gt;print_messsage("/^2/","login_name fail");<br><br>			fputs($socket,base64_encode($this-&gt;password).$crlf);<br>			$this-&gt;message = fgets($socket, 512);				<br>			$this-&gt;print_messsage("/^2/","password fail");			<br><br>			fputs($socket,"MAIL FROM: from."&gt;".$crlf);<br>			$this-&gt;message = fgets($socket, 512);<br>			$this-&gt;print_messsage("/^2/","from fail");<br><br>			fputs($socket,"RCPT TO: to."&gt;".$crlf);<br>			$this-&gt;message = fgets($socket, 512);<br>			$this-&gt;print_messsage("/^334|^2/","to fail");<br><br>			fputs($socket,"DATA".$crlf);<br>			$this-&gt;message = fgets($socket, 512);<br>			$this-&gt;print_messsage("/^334|^2/","DATA fail");			<br><br>			$html = implode("",array(<br>						"To: ".$this-&gt;to.$crlf,<br>						"From: ".$this-&gt;from.$crlf,<br>						"Subject: ".$this-&gt;subject.$crlf.$crlf,<br>						$this-&gt;content.$crlf.".".$crlf,<br>					));<br><br>			fputs($socket,$html);<br>			$this-&gt;message = fgets($socket, 512);<br>			$this-&gt;print_messsage("/^2/","html fail");<br><br>			fputs($socket, "QUIT".$crlf);<br>			$this-&gt;message=fgets($socket,512);<br>			$this-&gt;print_messsage("/^2/","QUIT fail");<br>		}<br>		function print_messsage($reg="",$err=""){<br>			$message = $this-&gt;message;<br>			if(preg_match($reg,$message)				$this-&gt;err = $err."___".$message."--------------";<br>				echo $err."___".$message."--------------<br>";<br>				return false;<br>			}<br>			if(self::$debug){<br>				echo $this-&gt;message."<br>";<br>			}<br>			return true;<br>		}<br>	}<br>	$mail_options = array(<br>					"smtp_host"=&gt;"smtp.sina.com.cn",<br>					"login_name"=&gt;"ycwtt0527",<div class="clear"></div>